[OpenMP] Additional Information for Libomptarget Mappings

Summary:
This patch adds additonal support for priting infromation from Libomptarget for
already existing maps and printing the final data mapped on the device at
device destruction.

Reviewers: jdoerfort gkistanova

Subscribers: guansong openmp-commits sstefan1 yaxunl

Tags: #OpenMP

Differential Revision: https://reviews.llvm.org/D87722